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Air quality in San Marcos
Air quality index (AQI) and PM2.5 air pollution in San Marcos
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San Marcos Air Quality Map
Real-time San Marcos air pollution map
AIR QUALITY DATA CONTRIBUTORS
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Pollen
What is the pollen count in San Marcos today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | None | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in San Marcos?
| Weather | Broken clouds |
| Temperature | 57.2°F |
| Humidity | 88% |
| Wind | 4.6 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Fort Myers, Florida | 71 |
| 2 | Mecca, California | 71 |
| 3 | Corpus Christi, Texas | 70 |
| 4 | Pahrump, Nevada | 64 |
| 5 | Palm Desert, California | 63 |
| 6 | Yucaipa, California | 61 |
| 7 | Conway, South Carolina | 60 |
| 8 | Calexico, California | 59 |
| 9 | Coachella, California | 58 |
| 10 | Naples, Florida | 58 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live San Marcos aqi ranking
Real-time San Marcos air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Tucana Drive | 30 |
| 2 | CSUSM COMMONS | 24 |
| 3 | East Barham Drive | 13 |
(local time)
SEE WORLD AQI RANKING
US AQI
27
live AQI index
Good
Overview
What is the current air quality in San Marcos?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 27 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 4.9µg/m³ | |
✓
PM2.5 concentration in San Marcos air currently meets the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in San Marcos?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
San Marcos air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Sunday, May 26 | Good 12 AQI US |  | 68° 53.6° |  11.2 mp/h |
| Monday, May 27 | Good 36 AQI US | | 68° 51.8° | 8.9 mp/h |
| Today | Good 27 AQI US | |||
| Wednesday, May 29 | Good 48 AQI US |  | 71.6° 53.6° | 8.9 mp/h |
| Thursday, May 30 | Moderate 57 AQI US  | | 73.4° 55.4° | 8.9 mp/h |
| Friday, May 31 | Moderate 53 AQI US | | 73.4° 55.4° | 8.9 mp/h |
| Saturday, Jun 1 | Good 41 AQI US | | 69.8° 53.6° | 8.9 mp/h |
| Sunday, Jun 2 | Moderate 65 AQI US | | 69.8° 53.6° | 11.2 mp/h |
| Monday, Jun 3 | Moderate 59 AQI US | | 71.6° 55.4° | 11.2 mp/h |
| Tuesday, Jun 4 | Moderate 60 AQI US | | 71.6° 55.4° | 8.9 mp/h |
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News
The latest air quality news and resources.
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San Marcos air quality data attribution
3Contributors
- 3 Anonymous contributors
3 stations
3 Anonymous Contributors
1 Data source
Data validated and calibrated by IQAirWhere is the cleanest air quality in San Marcos?
AQI US, Metric